{"id":1018,"date":"2020-01-12T22:28:21","date_gmt":"2020-01-12T20:28:21","guid":{"rendered":"https:\/\/fortgale.com\/news\/?p=1018"},"modified":"2026-06-08T23:02:09","modified_gmt":"2026-06-08T23:02:09","slug":"alert-citrix-adc-netscaler-vulnerability","status":"publish","type":"post","link":"https:\/\/fortgale.com\/blog\/emerging-threats\/alert-citrix-adc-netscaler-vulnerability\/","title":{"rendered":"ALERT \u2014 Vulnerability in Citrix ADC (NetScaler)"},"content":{"rendered":"<p style=\"text-align: justify\">On 27 December 2019, a critical vulnerability was identified in Citrix ADC (Netscaler) products for versions 10.5, 11.1, 12.0, 12.1, and 13.0. The vulnerability permits unauthenticated remote code execution on affected systems.<\/p>\n<p style=\"text-align: justify\">Lateral movement capability within networks connected to the compromised system represents a material risk factor requiring assessment and mitigation.<\/p>\n<p style=\"text-align: justify\">We tracked approximately <strong>1 700 systems<\/strong> <strong><span style=\"text-decoration: underline\">potentially vulnerable<\/span><\/strong> across Italy.<\/p>\n\n\n<figure class=\"wp-block-gallery aligncenter columns-2 is-cropped wp-block-gallery-1 is-layout-flex wp-block-gallery-is-layout-flex\"><ul class=\"blocks-gallery-grid\"><li class=\"blocks-gallery-item\"><figure><img decoding=\"async\" src=\"https:\/\/fortgale.com\/news\/wp-content\/uploads\/sites\/2\/2020\/01\/cities-2.png\" alt=\"\" data-id=\"1023\" data-full-url=\"https:\/\/i1.wp.com\/fortgale.com\/news\/wp-content\/uploads\/sites\/2\/2020\/01\/cities-2.png?fit=590%2C353&amp;ssl=1\" data-link=\"https:\/\/fortgale.com\/news\/?attachment_id=1023\" class=\"wp-image-1023\" loading=\"lazy\" \/><\/figure><\/li><li class=\"blocks-gallery-item\"><figure><img decoding=\"async\" src=\"https:\/\/fortgale.com\/news\/wp-content\/uploads\/sites\/2\/2020\/01\/Companies.png\" alt=\"\" data-id=\"1024\" data-full-url=\"https:\/\/i0.wp.com\/fortgale.com\/news\/wp-content\/uploads\/sites\/2\/2020\/01\/Companies.png?fit=588%2C349&amp;ssl=1\" data-link=\"https:\/\/fortgale.com\/news\/?attachment_id=1024\" class=\"wp-image-1024\" loading=\"lazy\" \/><\/figure><\/li><\/ul><\/figure>\n\n\n\n<p class=\"has-text-align-center wp-block-paragraph\"><em>Potentially vulnerable systems by city and organization<br><\/em><br><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Italian financial and banking institutions at elevated risk<\/h2>\n\n\n\n<p style=\"text-align: justify\">Financial and banking institutions, as well as organizations providing outsourced IT services to the banking sector, represent high-value targets. Many of these entities expose potentially vulnerable systems.<\/p>\n\n\n\n<p style=\"text-align: justify\">We conducted a <strong>vulnerability assessment of leading Italian Banking and Finance sector organizations<\/strong> and identified the following exposure profile (institution names have been anonymized; numbers represent quantity of exposed vulnerable systems):<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large\"><img decoding=\"async\" src=\"https:\/\/fortgale.com\/news\/wp-content\/uploads\/sites\/2\/2020\/01\/istituti-finanziari.png\" alt=\"\" class=\"wp-image-1040\" loading=\"lazy\" \/><\/figure><\/div>\n\n\n\n<p class=\"has-text-align-center wp-block-paragraph\"><em>Financial institutions with highest count of potentially vulnerable systems<\/em><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Attack detection<\/h2>\n\n\n\n<p style=\"text-align: justify\">To identify potential exploitation attempts or system compromise, execute the following command:<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">ssh -t sistema.citrix.local 'grep -r \"\/..\/vpns\/\" \/var\/log\/http*'<\/pre>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large\"><img decoding=\"async\" src=\"https:\/\/i1.wp.com\/fortgale.com\/news\/wp-content\/uploads\/sites\/2\/2020\/01\/example2.jpg?fit=750%2C163&amp;ssl=1\" alt=\"\" class=\"wp-image-1027\" loading=\"lazy\" \/><\/figure><\/div>\n\n\n\n<h2 class=\"wp-block-heading\">Mitigation and additional information<\/h2>\n\n\n\n<p style=\"text-align: justify\">No patch has been released to remediate this vulnerability. Organizations should implement compensating controls through <a href=\"https:\/\/fortgale.com\/en\/cybersecurity-advisory\/\">Cybersecurity Advisory<\/a> engagement and vendor mitigation guidance.<\/p>\n\n\n\n<p style=\"text-align: justify\">Mitigation procedures are available at: <a href=\"https:\/\/support.citrix.com\/article\/CTX267679\">https:\/\/support.citrix.com\/article\/CTX267679<\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Critical Citrix ADC\/NetScaler vulnerability: exploitation primitives, exposure metrics on Italian perimeters and remediation steps for affected appliances.<\/p>\n","protected":false},"author":1,"featured_media":1023,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3],"tags":[27,49,68,3272,91,3273,146,243,3206],"class_list":["post-1018","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-emerging-threats","tag-alert","tag-banking","tag-citrix","tag-citrix-adc","tag-cve-2019-19781","tag-edge-device-vulnerability","tag-finance","tag-netscaler","tag-patch-urgency"],"_links":{"self":[{"href":"https:\/\/fortgale.com\/blog\/wp-json\/wp\/v2\/posts\/1018","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/fortgale.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/fortgale.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/fortgale.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/fortgale.com\/blog\/wp-json\/wp\/v2\/comments?post=1018"}],"version-history":[{"count":1,"href":"https:\/\/fortgale.com\/blog\/wp-json\/wp\/v2\/posts\/1018\/revisions"}],"predecessor-version":[{"id":9897,"href":"https:\/\/fortgale.com\/blog\/wp-json\/wp\/v2\/posts\/1018\/revisions\/9897"}],"wp:attachment":[{"href":"https:\/\/fortgale.com\/blog\/wp-json\/wp\/v2\/media?parent=1018"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fortgale.com\/blog\/wp-json\/wp\/v2\/categories?post=1018"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fortgale.com\/blog\/wp-json\/wp\/v2\/tags?post=1018"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}